package com.dayuanit.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public class CharFilter implements Filter {
	
	private static String charEncoding;

	@Override
	public void destroy() {
		System.out.println("CharFilter is destroying...");
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		request.setCharacterEncoding(charEncoding);
		chain.doFilter(request, response);
	}

	@Override
	public void init(FilterConfig config) throws ServletException {
		System.out.println("CharFilter is init...");
		charEncoding = config.getInitParameter("charEncoding");
	}
}
